If you are looking for a way to keep in touch with friends and family on your iPhone 4, there is a good chance that WhatsApp is the app you are looking for. WhatsApp is a free messaging app that allows you to send and receive messages without having to install any additional software. To use WhatsApp on your iPhone 4, first open the app and sign in. Then, open the chat box and type in your desired message. Once you have sent your message, tap on the “send” button to send it off. If you want to receive a message from someone else on your iPhone 4, just tap on the “receive” button and wait for the person to respond. WhatsApp is an excellent messaging app that can help keep you connected with loved ones while away from home or during busy times.
